CVE-2021-42237
KEV RANSOMWAREHIGH 10.0EPSS 97.9%
Sitecore XP 7.5 Initial Release to Sitecore XP 8.2 Update-7 is vulnerable to an insecure deserialization attack where it is possible to achieve remote command execution on the machine. No authentication or special configuration is required to exploit this vulnerability.
- CVSS v3.1
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS v3.1
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS v2.0
- 10.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C - EPSS
- 97.90% chance of exploitation in the next 30 days, 100th percentile
- CISA KEV
- added 2022-03-25, used in ransomware campaigns
- Nuclei
- critical · CWE-502
- Published
- 2021-11-05
- Updated
- 2026-07-09
Proof-of-concept exploits (3)
- ItsIgnacioPortal/CVE-2021-4223714★ · 2022-01-16
- PinkDev1/CVE-2021-4223714★ · 2022-01-16
- vesperp/CVE-2021-42237-SiteCore-XP1★ · 2022-06-30